#我将子包中的函数和模块导入到此
  
from .area.square import square_area  
from .area.rectangle import rectangle_area  
from .area.circle import circle_area  
from .area.triangles import triangle_area  
from .surface_area.cube import cube_surface_area  
from .surface_area.cuboid import cuboid_surface_area  
from .surface_area.sphere import sphere_surface_area  
from .surface_area.cylinder import cylinder_surface_area  
from .volume.cube import cube_volume  
from .volume.cuboid import cuboid_volume  
from .volume.sphere import sphere_volume  
from .volume.cylinder import cylinder_volume  
  
# 现在，当你导入 geometry 包时，这些函数都会被导入  
# 例如：from geometry import square_area